: ...\Steam\steamapps\common\Grand Theft Auto IV\GTAIV\ .
If you're playing on a console like the PlayStation 3 or Xbox 360, you can purchase GTA IV from the respective console store (PlayStation Store or Xbox Store) and follow the on-screen instructions for download and installation. download launch gta iv exe link
The GTA IV executable file (gtaiv.exe) is located in the game's installation directory. You can also create a shortcut to the executable file on your desktop for easy access. download launch gta iv exe link